The New South Wales Waratahs' humbling loss to the Super Rugby-leading Sharks in Durban on Saturday has been compounded by a citation to winger Rob Horne for striking.
The 15-test Wallabies back was penalised after coming into contact with the Sharks' Francois Steyn early in the 32-10 mauling.
The match's citing commissioner had deemed the hit deserving of a red card on review and referred the incident to the judiciary, governing body SANZAR said in a statement on Sunday.
Horne's likely ban for at least a week will tempt selectors to rush prolific try-scorer Israel Folau back from a throat injury after the re-jigged Waratahs' backline barely fired a shot in the absence of their explosive fullback.
Folau, who has scored eight tries in four matches this season, flew to South Africa on Saturday to join the Waratahs camp but only rated himself a '50-50' chance to line up against the Stormers in Cape Town next week.
Sharks centre Frans Streyn was cited for a slam tackle off the ball on his Waratah opposite number, Kurtley Beale.
Meanwhile, Highlanders prop Kane Hames has been cited for a dangerous charge during their 30-12 Super Rugby loss to the Blues in Auckland.
Loosehead Hames, 25, is charged with entering a ruck illegally without the use of his arms in the 59th minute of the game on Saturday.
His elbow struck Blues forward Hayden Triggs in the back of head, leaving the lock in need of medical treatment.
The match citing commissioner said the incident, which wasn't seen by match officials, met the red card threshold for foul play.